那些遇到过的问题

如何在Spring中处理MultipartException

Dar*_*ner 5 java tomcat spring-security spring-webflow-2

我的配置在这里。

我根据帖子中的答案进行了一些修改。

filterMultipartResolver

@Bean
public StandardServletMultipartResolver filterMultipartResolver() {
    return new StandardServletMultipartResolver();
}
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AppInitializer

public class AppInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(final ServletContext servletContext) throws ServletException {
        // Create the 'root' Spring application context
        final WebApplicationContext context = getContext();
        // Manage the lifecycle of the root application context
        servletContext.addListener(new ContextLoaderListener(context));
        final Dynamic dispatcher = servletContext.addServlet("DispatcherServlet", new DispatcherServlet(context));
        dispatcher.setMultipartConfig(getMultipartConfigElement());
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }

    private static AnnotationConfigWebApplicationContext getContext() {
        final AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
        context.register(AppConfig.class);
        return context;
    }

    private static MultipartConfigElement getMultipartConfigElement(){
        return new MultipartConfigElement(Props.FILE_TMP_DIRECTORY, 3 * 1024 * 1024, 3 * 1024 * 1024, 3 * 1024 * 1024);
    }
}
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我遵循了这篇文章的建议，并包括了MultipartExceptionHandler

public class MultipartExceptionHandler extends OncePerRequestFilter {
    static final Logger log = LoggerFactory.getLogger(MultipartExceptionHandler.class);

    @Override
    protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response, final FilterChain filterChain) throws ServletException, IOException {
        try {
            filterChain.doFilter(request, response);
        } catch (final MultipartException me) {
            log.error(me.getMessage());
            response.sendRedirect(UrlUtils.buildFullRequestUrl(request) + "&error=size-limit");
        }
    }
}
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注册在

public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer {

    @Override
    protected void beforeSpringSecurityFilterChain(final ServletContext servletContext) {
        insertFilters(servletContext, new MultipartExceptionHandler());
        insertFilters(servletContext, new MultipartFilter());
    }
}
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当我尝试上传超过最大大小的文件时，这就是我在日志中看到的

DEBUG 2015-03-17 19:54:18,372: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-17 19:54:18,372: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-17 19:54:18,372: org.springframework.web.multipart.support.MultipartFilter - Resolving multipart request [/registrazione] with MultipartFilter
ERROR 2015-03-17 19:54:18,384: it.openex.pmfew.filters.MultipartExceptionHandler - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
DEBUG 2015-03-17 19:54:18,386: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-17 19:54:18,386: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-17 19:54:18,386: org.springframework.web.multipart.support.MultipartFilter - Resolving multipart request [/registrazione] with MultipartFilter
ERROR 2015-03-17 19:54:18,386: it.openex.pmfew.filters.MultipartExceptionHandler - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
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它会重复7次，并且不会在过滤器中指定重定向：我只是得到一个空白页。

我不确定会发生什么，因为有时在过滤器中添加调试断点使其可以工作，甚至添加Thread.sleep(100)

更新1

有关此问题的更多信息。

每次我重新启动Tomcat时，过滤器可能被调用2次或7次。只有一个POST呼叫。

chrome中的响应为(failed) net::ERR_CONNECTION_RESET。

该请求是的实例org.apache.catalina.connector.RequestFacade，包含的实例org.apache.catalina.connector.Request。在后者内部，该属性partsParseException携带日志中显示的异常。每次请求都相同。

链中有4个过滤器：

  • MultipartExceptionHandler（我添加的过滤器）
  • org.springframework.web.multipart.support.MultipartFilter
  • org.springframework.web.filter.DelegatingFilterProxy
  • org.apache.tomcat.websocket.server.WsFilter

我将Tomcat升级到了最新版本：8.0.20。

我试图重定向到一个简单的url，如/，并在过滤器中捕获了各种异常，包括catch块可能抛出的异常。

结果是这样

public class MultipartExceptionHandler extends OncePerRequestFilter {
    static final Logger log = LoggerFactory.getLogger(MultipartExceptionHandler.class);
    @Override
    protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response, final FilterChain filterChain) throws ServletException, IOException {
        try {
            filterChain.doFilter(request, response);
        } catch (final MultipartException me) {
            try{
                log.error(me.getMessage());
                response.sendRedirect(UrlMap.HOME);
            } catch (final Exception e){
                log.error(e.getMessage());
            }

        }catch (final Exception e){
            log.error(e.getMessage());
        }
    }
}
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令人不安的是，它似乎并没有确定性的表现：使用Intellij Idea，有时如果我在“ MultipartExceptionHandler”的catch块中放置一个断点，然后恢复程序可以正常工作的话。

如果没有，我只需要重新启动Tomcat 1到2次，直到技巧再次起作用即可。

没有断点，该程序将永远无法运行。

更新2

我测试了该应用程序的行为。

我发现它只是不时地开箱即用，而无需重新启动Tomcat或进行任何花哨的操作。

可以尝试重新上传文件，直到文件顺利为止，如果出现错误，请按浏览器的“后退”按钮以返回到上传页面。

它工作4-5次中的1次，没有任何明显的重复模式。

如果失败，这是堆栈跟踪。在日志中，它连续重复2次，之后没有其他任何内容。

INFO  2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
INFO  2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - /registrazione?execution=e3s2
INFO  2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
DEBUG 2015-03-18 12:21:59,870: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-18 12:21:59,870: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-18 12:21:59,870: org.springframework.web.multipart.support.MultipartFilter - Resolving multipart request [/registrazione] with MultipartFilter
ERROR 2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:99)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:77)
    at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:76)
    at org.springframework.web.multipart.support.MultipartFilter.doFilterInternal(MultipartFilter.java:108)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at it.openex.pmfew.filters.MultipartExceptionHandler.doFilterInternal(MultipartExceptionHandler.java:29)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659)
    at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
    at org.apache.catalina.connector.Request.parseParts(Request.java:2792)
    at org.apache.catalina.connector.Request.getParts(Request.java:2636)
    at org.apache.catalina.connector.RequestFacade.getParts(RequestFacade.java:1083)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:84)
    ... 27 more
Caused by: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
    at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:811)
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:256)
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:280)
    at org.apache.catalina.connector.Request.parseParts(Request.java:2725)
    ... 30 more
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相反，如果进展顺利，stacktrace仅显示一次，然后追加（由于帖子的大小限制，我删除了一些部分）

INFO  2015-03-18 12:20:38,789: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
INFO  2015-03-18 12:20:38,789: it.openex.pmfew.filters.MultipartExceptionHandler - Url called -> /registrazione?execution=e1s2&error=size-limit
INFO  2015-03-18 12:20:38,789: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
DEBUG 2015-03-18 12:20:38,789: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-18 12:20:38,789: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-18 12:20:38,789: org.springframework.web.multipart.support.MultipartFilter - Request [/registrazione] is not a multipart request
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 1 of 13 in additional filter chain; firing Filter: 'WebAsyncManagerIntegrationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 2 of 13 in additional filter chain; firing Filter: 'SecurityContextPersistenceFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.context.HttpSessionSecurityContextRepository - No SecurityContext was available from the HttpSession: org.apache.catalina.session.StandardSessionFacade@2fabad6. A new one will be created.
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 3 of 13 in additional filter chain; firing Filter: 'HeaderWriterFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 4 of 13 in additional filter chain; firing Filter: 'CharacterEncodingFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 5 of 13 in additional filter chain; firing Filter: 'CsrfFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 6 of 13 in additional filter chain; firing Filter: 'LogoutFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 7 of 13 in additional filter chain; firing Filter: 'UsernamePasswordAuthenticationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 8 of 13 in additional filter chain; firing Filter: 'RequestCacheAwareFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 9 of 13 in additional filter chain; firing Filter: 'SecurityContextHolderAwareRequestFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 10 of 13 in additional filter chain; firing Filter: 'AnonymousAuthenticationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 11 of 13 in additional filter chain; firing Filter: 'SessionManagementFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 12 of 13 in additional filter chain; firing Filter: 'ExceptionTranslationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 13 of 13 in additional filter chain; firing Filter: 'FilterSecurityInterceptor'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.access.intercept.FilterSecurityInterceptor - Secure object: FilterInvocation: URL: /registrazione?execution=e1s2&error=size-limit; Attributes: [permitAll]
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit reached end of additional filter chain; proceeding with original chain
DEBUG 2015-03-18 12:20:38,789: org.springframework.web.servlet.DispatcherServlet - DispatcherServlet with name 'DispatcherServlet' processing GET request for [/registrazione]
DEBUG 2015-03-18 12:20:38,789: org.springframework.webflow.mvc.servlet.FlowHandlerMapping - Mapping request with URI '/registrazione' to flow with id 'registrazione'
DEBUG 2015-03-18 12:20:38,789: org.springframework.webflow.executor.FlowExecutorImpl - Resuming flow execution with key 'e1s2
DEBUG 2015-03-18 12:20:38,790: org.springframework.webflow.conversation.impl.SessionBindingConversationManager - Locking conversation 1
DEBUG 2015-03-18 12:20:38,790: org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository - Getting flow execution with key 'e1s2'
DEBUG 2015-03-18 12:20:38,790: org.springframework.webflow.definition.registry.FlowDefinitionRegistryImpl - Getting FlowDefinition with id 'registrazione'
DEBUG 2015-03-18 12:20:38,809: org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository - Putting flow execution '[FlowExecutionImpl@23da7555 flow = 'registrazione', flowSessions = list[[FlowSessionImpl@4c63c9fd flow = 'registrazione', state = 'companyLogo', scope = map['viewScope' -> map['fileForm' -> it.openex.pmcommonw.form.FileForm@ae6eeae], 'menuDTO' -> list[it.openex.pmfew.dtos.MenuEntryDTO@2fcdd386, it.openex.pmfew.dtos.MenuEntryDTO@3ba665a6, it.openex.pmfew.dtos.MenuEntryDTO@5767063d], 'userCompanyInfoForm' -> it.openex.pmcommonw.form.UserCompanyInfoForm@6ac911e1]]]]' into repository
DEBUG 2015-03-18 12:20:38,810: org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository - Adding snapshot to group with id 2
DEBUG 2015-03-18 12:20:38,813: org.springframework.webflow.conversation.impl.SessionBindingConversationManager - Unlocking conversation 1
DEBUG 2015-03-18 12:20:38,813: org.springframework.web.servlet.DispatcherServlet - Successfully completed request
DEBUG 2015-03-18 12:20:38,813: org.springframework.security.web.access.ExceptionTranslationFilter - Chain processed normally
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更新3

到目前为止，我尝试上传4.5MB大的文件。

相反，使用30MB的文件将永远无法使用。

更新4

在“计时”选项卡上的Chrome开发人员工具中查看POST请求，我可以看到该请求已停止。有关此状态的更多信息。

Firefox每次都使用4.5MB的大文件，可以正确地重定向到错误页面。如果文件较大（例如7MB），则无法使用，浏览器会返回该消息

The connection was reset

The connection to the server was reset while the page was loading.
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更新5

MultipartExceptionHandler在行内切换

response.sendRedirect(UrlUtils.buildFullRequestUrl(request) + "&error=size-limit");
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与

final RequestDispatcher requestDispatcher = request.getRequestDispatcher("/");
requestDispatcher.forward(request, response);
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在Chrome浏览器中，它的工作效率是4的3倍，并且对于大文件，它总是会像往常一样失败。日志中没有任何变化。

Tho*_*ach 0

听起来像是多个请求。根据日志，MultipartExceptionHandler发生异常时会调用该函数。

无法解析多部分 servlet 请求；嵌套异常是 java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException:

也许您可以在之后添加一个记录器protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response, final FilterChain filterChain)，在此处设置断点并检查请求。请求可能为空或其他原因

无法解析多部分 servlet 请求；...请求被拒绝，因为它的大小...

在这种情况下UrlUtils.buildFullRequestUrl(request)也会抛出一个未被捕获的异常。

public final class UrlUtils {
    public static String buildFullRequestUrl(HttpServletRequest r) {
         return buildFullRequestUrl(r.getScheme(), r.getServerName(), r.getServerPort(), r.getRequestURI(),
                 r.getQueryString());
    }
...
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尝试像这样手动设置重定向 uri response.sendRedirect(uri + "&error=size-limit")。这意味着响应不能为空。

尝试使用模拟请求和模拟异常编写文件上传测试，并断言预期的重定向 uri。

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